As Newtosavage stated, the 7.62x39 and 300 AAC/Whisper/BO won't be able to touch a 30-30 bolt action (or Lever action with the FTX bullets) with new high BC bullets strictly due to their case capacity limitations.
Case Capacities
7.62x39mm = 35.6 grains of H2O
300 Blackout = 25.4 grains of H2O
30-30 Win = 45 grains of H2O
Maximum SAAMI Pressure
7.62x39mm = 51,490 psi
300 Blackout = 55,000 psi
30-30 Win = 42,000 psi
Hornady's Offerings
Hornady 7.62x39mm 123gr SST = 2,040 FPS, 1,136 Ft/Lbs. (100 yards) (20" barrel)
Hornady 300 Blackout 125gr HP = 1,932 FPS, 1,036 Ft/Lbs. (100 yards) (16" barrel)
Hornady 30-30 160gr FTX = 2,400 FPS, 1,643 FT/Lbs. (100 yards) (24" barrel)
In comparison to the 7.62x39mm the 30-30 Win will have 23.2% more bullet mass, 15% more velocity, and 30.8% more energy than the 7.62x39mm;
In comparison to the 300 Blackout the 30-30 Win will have 21.9% more bullet mass, 19.5% more velocity, and 37.0% more energy than the 300 Blackout.
Now this is just going onto Hornady's website and picking their factory cartridges, so someone may have a better result in reloading than this but as far as some factory loads, it's not even a comparison between the three. Now one has to take in account barrel length, thank you R.W. Dale, but I still don't think that they will be able to touch the 30-30.